calstar 

I just saw a pic(don't remember where) of a disc tab ready for brazing that was fixed in place using a hub with a disc mounted. The mechanical disc brake to be used was secured/clamped to the disc using the brake's clamping cable, then the disc tab was directly mounted to the brake body and positioned for brazing(and/or final fitting then brazing) to the fork(or rear stay). I tried to explain this as best I could, hope it makes sense without a pic. Any down side to this method?

thanks, Brian